[42999] in Cypherpunks
Re: forging headers
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Mon Nov 6 22:09:24 1995
To: tien@well.sf.ca.us (Lee Tien)
Cc: cypherpunks@toad.com
In-Reply-To: Your message of "Mon, 06 Nov 1995 19:52:58 PST."
<199511070249.SAA14921@well.com>
Reply-To: perry@piermont.com
Date: Mon, 06 Nov 1995 21:55:12 -0500
From: "Perry E. Metzger" <perry@piermont.com>
You didn't send ALL the headers, only some of them. You need to send
on the full set to make a trace possible.
Lee Tien writes:
> So I got this message. How would someone identify the sender of this
> message? I'm writing an article on anonymity, with some discussion of
> remailers, and want to argue that forging already permits people to raise
> the costs of tracing significantly, anonymous remailers or no.
>
> Lee
>
> >From: freeh@fbi.gov
> >Date: Tue, 24 Oct 95 16:07:08 -0400
> >Apparently-To: tien@well.sf.ca.us
> >X-UIDL: 814570964.056
> >
> >> How difficult is it to forge headers? How difficult is it to trace a
> >> message to the actual sender if the header is forged?
> >
> >Not very difficult at all (to forge, that is). This is a quick and dirty
> >example that should be somewhat traceable. If you want pointers on how to
> >trace it, post the whole thing, including headers, to cypherpunks.
> >
> >Louis
